The 3-Bell Smith Hyson Super Whistle, is made by Smith Hyson Bros company, these were applied to many ships along 1908-1935. Variants were made from 600 pound sets to 750 pound sets of brass. Since The RMS Titanic is the most popular 4 stacker online, its whistle is wanted to be heard. But the Titanic's whistle was not blown properly. As it was blown with 100 pounds of air. These whistles were designed for 200psi steam. There are lots of videos of these whistles blown properly. I just made a montage for every video i can find of them blown on steam. Using some of these sources. I tried my best to recreate the sound of the whistle.
   • Recreated Rms Titanic Whistle (60fps)...  

Links to original Videos:

Aquitania:    • Rms Aquitania Whistle  

John Brown:
   • Steam Whistle on Liberty Ship: John B...  

Mauretania:
   • RMS Mauretania SHIP WHISTLE  
   • RMS Mauretania at Drydock - Cunard Li...  

Normandie:
   • Pratt Institute Midnight whistle blow...  
   • Pratt Steam Whistles 2014-2015  
   • Pratt Steam Whistles NYE 2014/15  
   • Pratt whistle blow: The main attraction  
   • Normandie Whistle  
   • normandie  steam whistle  
   • Normandie Whistle  

Olympic:    • The Olympic Arrives in New York 1934